重庆大学学报2025，Vol.48Issue(8)：28-39,12.DOI:10.11835/j.issn.1000-582X.2024.266
考虑蠕变的任意多边形杂交应力单元
Arbitrary polygonal hybrid stress element for creep analysis in roadbed engineering
摘要
Abstract
Post-construction settlement of roadbeds is a critical factor influencing the long-term safety and performance of highways.Accurate prediction of creep behavior is of great significance for ensuring the structural integrity of roadbed systems.However,conventional finite element simulations of creep behavior require extensive meshing for complex structural models,leading to high computational costs and time consumption.To address these challenges,this paper proposes a novel arbitrary polygonal hybrid stress element method(PHSEM)that incorporates creep effects for roadbed settlement analysis.Based on the hybrid stress finite element method and the time-dependent deformation characteristics of roadbed soil,the theoretical formulation of the PHSEM is derived.This element introduces a higher-order stress field,improving computational accuracy.A numerical creep model is further established and validated against results obtained from MARC software.The simulation results show that the PHSEM achieves good agreement with benchmark solutions,with deviations within acceptable limits.Furthermore,the element accommodates polygons with variable edge counts,offering flexible meshing for complex,heterogeneous roadbed models and enabling realistic stress distribution analysis.The proposed PHSEM provides a promising approach for creep modeling in practical geotechnical engineering applications.关键词
杂交应力元/任意多边形杂交应力单元/蠕变/高阶应力场/有限元/路基Key words
hybrid stress element/arbitrary polygonal hybrid stress element/creep/higher-order stress field/finite element/roadbed分类
数理科学引用本文复制引用
黎子君,田静杰,胡长浩,谭大文,夏帆,侯春尧,刘璐瑶,宁少庆,郭然..考虑蠕变的任意多边形杂交应力单元[J].重庆大学学报,2025,48(8):28-39,12.基金项目
国家自然科学基金(12072135,12227801) （12072135,12227801）
中国长江电力股份有限公司项目(Z412302007).Supported by National Natural Science Foundation of China(12072135,12227801)and China Yangtze Power Co.,Ltd.(Z412302007). （Z412302007）
